Carbon nanotubes, particularly multi-walled ones, are widely used in various advanced applications due to their exceptional mechanical, electrical, and thermal properties. In electronics, they are incorporated into conductive films, transistors, and sensors, enhancing performance and miniaturization. They serve as key components in energy storage devices like lithium-ion batteries and supercapacitors, improving energy density and charge-discharge cycles. In composite materials, multi-walled carbon nanotubes reinforce polymers, metals, and ceramics, resulting in lightweight yet strong materials for aerospace, automotive, and construction industries. They are also utilized in environmental applications, such as water filtration and gas adsorption, due to their high surface area and adsorption capacity. Additionally, their use in biomedical fields includes drug delivery systems, tissue engineering scaffolds, and biosensors, leveraging their biocompatibility and unique structural properties.